Plate P1 (continued). 73, 74. Impagidinium paradoxum (Sample 189-1168A-3H-3, 60-62 cm); 2, V20-4 (scale bar = ~10 µm). 75, 76. Impagidinium patulum (Sample 189-1168A-20X-2, 60-62 cm); 1, F38-3. 77. Invertocysta tabulata (Sample 189-1168A-10H-7, 60-62 cm); 1, R32. 78, 79. Labyrinthodinium truncatum (Sample 189-1168A-23X-5, 60-62 cm); 2, S23-3 (scale bar = ~10 µm). 80. Melitasphaeridium choanophorum (Sample 189-1168A-13X-1, 60-62 cm); 2, M26. 81-84. Membranilarnacia? picena (Sample 189-1168A-65X-3, 60-62 cm); 1, R57-2. (Continued on next page.)

Plate P1 (continued). 73, 74. Impagidinium paradoxum (Sample 189-1168A-3H-3, 60-62 cm); 2, V20-4 (scale bar = ~10 µm). 75, 76. Impagidinium patulum (Sample 189-1168A-20X-2, 60-62 cm); 1, F38-3. 77. Invertocysta tabulata (Sample 189-1168A-10H-7, 60-62 cm); 1, R32. 78, 79. Labyrinthodinium truncatum (Sample 189-1168A-23X-5, 60-62 cm); 2, S23-3 (scale bar = ~10 µm). 80. Melitasphaeridium choanophorum (Sample 189-1168A-13X-1, 60-62 cm); 2, M26. 81-84. Membranilarnacia? picena (Sample 189-1168A-65X-3, 60-62 cm); 1, R57-2.